The archive contains constraints associated with the findings in https://arxiv.org/abs/2412.15051

- T2K 2019 Constraint at 95 CL level
- T2K + T2KII Constraint at 95 CL level
- T2K + T2KII Constraint at 5σ CL level
- Simulation examples 
    - nu
    - nubar

The examples are generated by SIREN and our implementation of the ND280 of the T2K and its upgrade.
Examples of the simulation for HNLs (M=6.16e-01 GeV, mu=3.59e-06 GeV^-1) upscattering with nuclear targets and decaying are saved as .parquet files.
The parameters are chosen to be close to the region of parameter space favoured by the MiniBooNE explanation, and the dipole parameter d = mu/2 is half the transition magnetic moment.  
The examples are labelled by 'mode,experiment,TPC',
- mode = {nu,nubar},
- experiment = {T2K,T2KII},
- TPC = {HATPC1,HATPC2,TPC1,TPC2,TPC3}.